Transcript Powerpoint - Godley ISD

Texas Ecoregions
Effects of Weathering, Erosion
and Deposition
Factors Affecting
Our Ecoregions
Weathering – chemical and physical break
down of rocks into sediment
Erosion – the movement of sediment from
one place to another
Deposition – the placement of sediment
after being carried from place of origin
Types of Weathering
Chemical weathering – changes mineral
composition of rocks.
Physical weathering–rocks are broken into
smaller pieces.
Piney Woods #1
Color
Green
1. It is the wettest region of the state.
This allows for a lot of
decomposition which results in
nutrient-rich soils.
W.E.D.
W- Soil is produced from weathered
granite.
E-Very little erosion occurs here because
forests and grass holds soil in place
D- Sediments are carried and dropped
along the river route
Oak Woods and Prairies #2
Color Gray
W.E.D.
This area receives a
moderate amount of rain
which shapes the land.
W- Trees and grass prevent too
E- much weathering, erosion and
D- deposition.
Blackland Prairie #3
Color Red
W.E.D.
This area receives a moderate
amount of rain which shapes the
land.
W- Trees and grass prevent too
E- much weathering, erosion and
D- deposition.
Gulf Coast Prairie and Marshes #4
& #5
Color Dark Blue
W.E.D
W- Waves rock mechanical
weathering.
E- Waves cause beach and
sediment erosion
D- Sediments can be deposited
along the beach and carried out
to form sand bars
South Texas Plains #6
Color Light Blue
The area is known as “Brush
Country” due to the shorter trees
and many shrubs.
W.E.D.
W- Wind and rain weather the
terrain
E- Overgrazing of the land has
allowed nutrient-rich topsoil to
erode way making it hard for grass
to grow
D- river can carry sentiments to
different areas
Edwards Plateau #7
Color Brown
W.E.D
W- rock is physically
weathered where sheets of
rock are peeled away from
the surface.
E- Wind and rain erode the
rock
D- sediment is carried by
rivers to create the soil
Llano Uplift #8
Color Yellow
W.E.D.
W- Limestone rock
formations with caves
formed by chemical
weathering
E- Wind and rain erode
the rock
D- sediment is carried by
rivers to create the soil
Rolling Plains #9
Color Light Green
W.E.D.
W- rivers weather the area
forming canyons
E- rivers erode the land
forming canyons
D- material from erosion is
deposited at the mouth of
river and river beds
changing its shape.
High Plains #10
Color Purple
W.E.D.
W- weathering of rock by water
flowing through the Red River.
E- Palo Duro Canyon was formed
by water erosion. Wind erosion
occurs where there are little to no
plants
D- The water deepens the Palo
Duro Canyon by moving sediment
downstream.
Trans-Pecos #11 Color Orange
W.E.D.
W- Flashfloods cause rock
to weather
E- Winds erode rock
causing sand dunes
D- Soils are a result of
weathering and erosion.